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The West Pacific is the most active and the north Indian the least active. An average of 86 tropical cyclones of tropical storm intensity form annually worldwide, with 47 reaching hurricane/typhoon strength, and 20 becoming intense tropical cyclones, super typhoons, or major hurricanes (at least of Category 3 intensity). [1]
Since 2009 the Hong Kong Observatory has divided typhoons into three different classifications: typhoon, severe typhoon and super typhoon. [20] A typhoon has wind speed of 64–79 knots (73–91 mph; 118–149 km/h), a severe typhoon has winds of at least 80 knots (92 mph; 150 km/h), and a super typhoon has winds of at least 100 knots (120 mph ...
The typhoon killed 456 people and left more than US$4.2 billion in damage. [131] China's costliest typhoon on record was Typhoon Fitow in 2013, which inflicted ¥63.1 billion in damage (US$10.4 billion) when it struck Wenzhou as the most powerful October landfall in mainland China. [132]
More than 5.00 inches (127 mm) of precipitation fell in northwest Arizona, with many parts of the state collecting more than an inch of rain. [6] This same system produced more than twice the average annual rainfall in Imperial Valley, California. [7] On the 11th, the remnants of a separate system also passed over southwest Arizona. [7]
In the peak of Atlantic hurricane season, words matter. And using the right ones at the right time can be the difference between alerting of a far-out rotating storm system to a nearer full-blown ...
A tropical cyclone is the generic term for a warm-cored, non-frontal synoptic-scale low-pressure system over tropical or subtropical waters around the world. [4] [5] The systems generally have a well-defined center which is surrounded by deep atmospheric convection and a closed wind circulation at the surface. [4]
Harvey's storm total rainfall is the most recorded within the United States. [120] [121] Harvey's extremely heavy rainfall produced catastrophic flooding across much of southeastern Texas; particularly in and around the Houston metropolitan area, where accumulations exceeded 40 in (1,000 mm) over a four-day period. [120]
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